Mark had lived in a small city for all of his life, and local people thought of him as a solid citizen.

In this sentence, the word solid most likely means

A. popular. B. dependable. C. unbroken. D. immovable.

The correct answer is B, dependable. In this sentence, solid is an adjective describing citizen. Previously, the sentence indicates that Mark has lived in a small city for all of his life. Given the nature of a small city, and his many years spent there, it would make sense that the local population thought of him as a dependable citizen.